JP2003261841A - Adhesive sheet for lamination - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive sheet for lamination without a paper backing which is suitably used in thermal transfer printers and exerts an excellent usability in forming a laminated tag by laminating adhesive layers face to face. <P>SOLUTION: The adhesive sheet for lamination 10 has a substrate 11 whose surface acts as an information display part 14. An adhesive layer 1 is established on the rear side of the substrate 11, and a central folding part 13 of the substrate 11 is half-cut in a foldable manner. The adhesive layer 1 is made of a material which does not adhere strongly to itself upon folding at the folding part 13 and laminating face to face, but strongly adheres to itself upon laminating and pressure bonding face to face. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive sheet for bonding, in which the pressure-sensitive adhesive layers are bonded together to form a tag.

[0002]

2. Description of the Related Art With the progress of POS, not only printing fixed information such as product name and brand mark commonly used for a series of products, but also for each product such as price, serial number, bar code, etc. A tag in which variable information that changes is printed on one side by a printer has been widely used.
Furthermore, there is an increasing demand for printing on both sides of a tag only with a printer, omitting the printing process, especially for small lot products. Generally, many of these printers do not support double-sided printing, so in order to print on both sides, it is necessary to replace the tag printed on one side with the printer and print twice. There was a risk that the printing correspondence would shift. Such print misalignment has been a particular problem when the print contents on both sides fluctuate in conjunction with each other.

Therefore, in order to solve such a problem, a bonded tag 50 as shown in FIG. 5 has been proposed. As shown in FIG. 6, the sticking tag 50 referred to here is provided with an information display portion 14 on the front surface of the base material 11, and an adhesive label body with a mount temporarily attached to a mount 15 with an adhesive layer 12 formed on the back surface. The adhesive layer 12 is obtained by peeling the adhesive sheet 12 from the mount 15 and bending it from the bending portion 13 provided in the center of the adhesive label body 30.
According to this method, it is possible to print at once on the label body 30 before forming the sticking tag 50 in a spread state, and there is no need to pay attention to the correspondence relationship between the print contents displayed on both sides as described above. There is a feature called.

[0004]

However, when the above-mentioned adhesive label with a mount is used for the bonding tag, the mount having at least twice the area of the bonding tag required is discharged as waste. There's a problem.
This contradicts the demand of the era for resource saving and reduction of waste, and improvement was required. Further, also in terms of work, there is a problem in that the adhesive label with a mount has a problem in that the adhesive sticks to the hand when sticking the sticky label, and the sticking takes time.

The present invention has been made in view of the above circumstances, and is suitable for use in a thermal transfer printer and is excellent in workability in a bonding sheet in which pressure-sensitive adhesive layers are bonded together to form a bonding tag. It is an object to provide a pressure-sensitive adhesive sheet for bonding without a mount.

[0006]

[Means for Solving the Problems] That is, in order to achieve the above-mentioned object, the invention according to claim 1 uses the surface of a base material sheet as an information display part, and the back surface is provided with an adhesive layer for bonding. A pressure-sensitive adhesive sheet, wherein the pressure-sensitive adhesive layer does not firmly adhere to the surface of the base sheet even when superposed and pressure-bonded, but is composed of a pressure-sensitive adhesive that is firmly adhered by being superposed on each other and pressure-bonded. And

According to a second aspect of the invention, in the constitution of the first aspect of the invention, the adhesive force between the adhesive layers is 5 N / 25 m.
The adhesive force between the pressure-sensitive adhesive layer and the surface of the substrate sheet is 1 N / 25 mm or less. The adhesive force is a value determined by a 180 ° peel test conducted at a peel speed of 300 mm / min in accordance with the method for measuring the adhesive force described in item 8 of JISZ-0237.

The invention of claim 3 is the same as claim 1 or 2.
In the constitution of the invention, the pressure-sensitive adhesive contains at least natural rubber latex.

The invention of claim 4 is based on claims 1 to 3.
In the configuration of the invention described in any one of 1 above, a timing mark which is print position information when printing with a printer is provided on the base material sheet, and variable information is printed by the printer in the information display section. Characterize.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a pressure-sensitive adhesive sheet for laminating according to an embodiment of the present invention will be described with reference to FIGS. However, the following description is merely an example of the present invention, and the technical scope of the invention is not limited by the following description.

FIG. 1 is a perspective view showing a pressure-sensitive adhesive sheet 10 for bonding according to the present invention. FIG. 2 is a schematic diagram showing a state where the adhesive sheet 10 for bonding shown in FIG. 1 is attached to the printer 20. In addition, in FIG. 3, after printing on the adhesive sheet 10 for bonding by the printer 20, one adhesive label body 30 is separated, and the adhesive label body 30 is bent at the bent portion 13.
FIG. 6 is a perspective view showing a state in which the pressure-sensitive adhesive layers 12 are bent in opposite directions. FIG. 4 is a side view showing the bonded tag 40 thus obtained.

As shown in FIG. 1, a pressure-sensitive adhesive sheet 10 for laminating of the present invention comprises a base material 11 and a pressure-sensitive adhesive layer 1 provided on the back surface of the base material 11, and further on the center of the front surface of the base material 11. A cut (half cut) that does not reach from the front surface to the back surface of the base material 11 is formed in the bent portion 13 that can be bent. Further, an information display portion 14 for displaying information by printing or printing is provided on the front surface of the base material 11, and a timing mark is provided on the back surface (not shown). The pressure-sensitive adhesive sheet 10 for lamination has a core 17
Is wound into a roll.

Here, the material of the base material 11 is not only paper base materials such as coated paper, high-quality paper, kraft paper and art paper, but also PE.
Film-based substrates such as T, PE, PP and synthetic paper and synthetic substrates can also be used. In addition to these base materials, heat-sensitive paper that develops color directly by heat can also be used. However, depending on the combination of the pressure-sensitive adhesive and the base material, the anchoring property of the pressure-sensitive adhesive is poor, and the pressure-sensitive adhesive may be easily peeled from the pressure-sensitive adhesive sheet for bonding.
Between the base material 11 and the pressure-sensitive adhesive layer 1, the base material 11 and the pressure-sensitive adhesive layer 1
One or more anchor coat layers made of a material having an affinity for both may be provided.

As the pressure-sensitive adhesive forming the above-mentioned pressure-sensitive adhesive layer 1, a natural rubber latex or a pressure-sensitive adhesive containing a natural rubber latex and an alkyl acrylate copolymer emulsion is suitable. Generally, when the blending ratio of the natural rubber latex is large, the adhesive force to the base material is weak, which is preferable, but there is a problem that a large force is required to bond the pressure-sensitive adhesives. On the other hand, when the amount of the acrylic acid alkyl ester-based copolymer emulsion is large, the adhesive strength to the base material becomes strong, and the transport failure easily occurs. Moreover, since it sticks to the fingers during work and the workability deteriorates, it is preferable to appropriately change the formulation depending on the application in consideration of these. The thickness of the pressure-sensitive adhesive layer is preferably 3 μm to 30 μm,
More preferably, it is 5 μm to 15 μm. If the pressure-sensitive adhesive layer is thin, the adhesive strength between the pressure-sensitive adhesive layers is insufficient, and if the pressure-sensitive adhesive is too thick, sticking to the substrate is likely to occur during rolling and storage. There is.

The pressure-sensitive adhesive sheet 10 for laminating the base material 11 and the pressure-sensitive adhesive layer 1 is wound in a roll shape, but the base material 11 and the pressure-sensitive adhesive layer 1 can be easily fed out during printing. The adhesive force with is preferably 1 N / 25 mm or less, more preferably 0.5 N / 25 mm or less. Further, the adhesive force between the pressure-sensitive adhesive layers 1 is preferably 5 N / 25 mm or more, more preferably 10 N / 25 mm or more so that the bonded adhesive layers 1 are not easily separated from each other after the bonded tag 40 is formed. Is.

Next, a method of forming a sticking tag 40 using the sticking adhesive sheet 10 will be described with reference to FIGS.
It will be described with reference to FIG. First, on the pressure-sensitive adhesive sheet 10 for bonding which is wound in a roll shape, the necessary printing 14A is performed in advance on the information display unit 14 by a printing machine (see FIG. 3). This is the unwinding shaft 21 of the printer 20.
And the guide roll 22 supports the lower surface of the pressure-sensitive adhesive layer 1 and guides the tip of the pressure-sensitive adhesive sheet 10 for bonding between the platen roll 23 and the thermal transfer ribbon 25, and further, the thermal transfer ribbon 25 and the thermal transfer ribbon 25 for bonding. The thermal head 24 is attached to the platen roll 2 via the adhesive sheet 10.
Crimp to 3. Here, when the printer is energized, the platen roll 23 rotates, the adhesive pressure sensitive adhesive sheet 10 is conveyed by the rotational driving force of the platen roll 23, and the information from the adhesive pressure sensitive adhesive sheet 10 is transferred by the heat from the thermal head 24. Thermal transfer printing 14B is performed on the display unit 14. After printing, the cutter 2 installed at the exit of the printer 20
By 6, the individual adhesive label bodies 30 are separated.

The pressure-sensitive adhesive label body 30 thus obtained
Is bent toward the adhesive layer 1 side along the half cut formed in the bent portion 13 and the facing adhesive layers 1 are bonded to each other to complete one bonded tag 40. Since the pressure-sensitive adhesive of the present invention has a weak adhesive force to a hand or a finger, even if the pressure-sensitive adhesive surface may touch the hand or the finger at the time of bonding, the pressure-sensitive adhesive does not stick to the sticky surface and the workability is very good.

In the above-described embodiment, the fixed information is printed by the printing machine 14 on both sides of the bonded tag 40.
A and the variable information print 14B by the printer 20 are formed, but both the fixed information and the variable information may be printed by the printer 20 as required.

Such a laminated tag 40 can be used as a brand tag attached to a product such as clothing or a shelf tag for managing products arranged on shelves. In addition, it can be used for a wide range of purposes, such as an examination ticket displaying a bar code such as a patient number, a medical treatment item, a patient name, a first medical examination date, and other management numbers, or an admission ticket to a theme park.

The pressure-sensitive adhesive sheet 1 for lamination according to the present invention
0 is a roll-shaped continuous body, but a plurality of adhesive label bodies 30 may be formed on one sheet, and even if they are separated into individual adhesive label bodies 30, there is a problem. There is no. When separating and using each label body, set it in the tag printer and print while feeding it one by one.

Further, not only half-cutting can be performed on the bent portion 13, but any desired method can be used as long as it facilitates bending of the adhesive sheet 10 for bonding, for example, perforation or embossing. Can also be selected.

Further, in the present embodiment, the cutting between the label main bodies 30 is performed by the cutter 26, but a separating portion such as perforations may be provided at the boundary of the label main body 30 in advance.

[0023]

As described above, according to the pressure-sensitive adhesive sheet for laminating of the present invention, since there is no mount like a conventional label with a mount, there is no problem associated with discarding the mount after use. In addition, since the adhesive strength of the adhesive layer to the surface of the base material and the transport roll of the printer is adjusted to be weak, it is possible to easily separate each other even when the adhesive layer is pressed onto the surface of the base material. It is possible to perform thermal transfer printing without the occurrence of transport trouble due to sticking of the adhesive. Furthermore, when the label body is folded and the adhesive layers are stacked together to form a laminated tag, the adhesive does not stick even when the adhesive layer is touched by the hands, etc. Good workability.

[Brief description of drawings]

FIG. 1 is a perspective view showing an adhesive sheet for laminating according to an embodiment of the present invention.

FIG. 2 is a schematic view showing a state in which the adhesive sheet for laminating shown in FIG. 1 is attached to a printer and printing is performed.

FIG. 3 is a perspective view showing a state in which one adhesive label body separated from the laminating adhesive sheet printed in FIG. 2 is folded around the folding part in a direction in which the adhesive layers face each other. Is.

FIG. 4 is a side view showing the bonded tag thus obtained.

FIG. 5 is a side view showing a conventional bonded tag.

FIG. 6 is a perspective view showing a pressure-sensitive adhesive label with a backing sheet used to form a conventional laminated tag.

[Explanation of symbols]

1,12 Adhesive layer 10 Adhesive sheet for laminating 11 Base material 13 Folding part 14 Information display section 14A printing 14B printing 15 mount 17 core core 20 printers 21 Unwinding axis 22 Guide roll 23 Platen Roll 24 thermal head 25 thermal transfer ribbon 26 cutters 30 Adhesive label body 40, 50 bonded tags 60 Adhesive sheet with mount

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Claims (4)

[Claims] 1. A pressure-sensitive adhesive sheet for laminating, comprising a front surface of a base material sheet as an information display portion and a pressure-sensitive adhesive layer on the back surface, wherein the pressure-sensitive adhesive layer is superposed on the front surface of the base material sheet and pressure-bonded thereto. A pressure-sensitive adhesive sheet for bonding, which is characterized by comprising pressure-sensitive adhesives that do not adhere firmly to each other, but firmly adhere to each other by stacking and press-bonding each other. 2. The adhesive force between the adhesive layers is 5 N / 25 mm.
Above, and the adhesive force between the pressure-sensitive adhesive layer and the surface of the substrate sheet is 1
It is N / 25 mm or less, The adhesive sheet for bonding of Claim 1 characterized by the above-mentioned. 3. The pressure-sensitive adhesive sheet for laminating according to claim 1, wherein the pressure-sensitive adhesive contains at least natural rubber latex. 4. The pressure-sensitive adhesive sheet for laminating according to claim 1, wherein the base sheet is provided with a timing mark which is printing position information when printing with a printer. .